The first legal “mash-up” record, “Collision Course” – which sold 368,000 copies according to Nielsen SoundScan – features hits by rapper Jay-Z and rockers Linkin Park, blended together as though that was the way they were always meant to be performed.

“American Idol” winner Kelly Clarkson‘s new sophomore album, “Breakaway” entered the charts in third place, Eminem‘s “Encore” fell two notches to No. 4 and New York rapper Nas grabbed the No. 5 spot with the debut of “Street’s Disciple.”